Vegetable salad performs well in the last three aspects: vegetables are an excellent source of vitamins, minerals and fiber. Salads usually contain many different vegetables, so they have many different nutrients, which can better meet all your requirements. Fiber is also difficult to get from fruits and vegetables, and most people need more fiber in their diet. Salads are also rich and reduce your craving for empty calories that lack these nutrients.
The problem with salads may be the seasoning, which may contain amazing amounts of fat and sugar. Covering salad with smooth nuts or fruits can turn your dish into dessert: the most sugary food sold by McDonald's is not their ice cream or pie, but salad! Using simple seasonings (such as oil and vinegar) can reduce unnecessary calories. Similarly, potato salad, pasta salad or fruit salad with half mayonnaise cannot be regarded as the above-mentioned "salad" in nutrition.
Salad is not magic medicine. If you eat too much seasoning or macaroni salad, you will easily get fat from a full-fat diet, and like other diets, you will still suffer from cancer and heart disease ... but the risk is much lower than yours. Don't eat vegetables at all. So salad is really healthy.
It is generally considered as a lower calorie option. Literally, the stomach will be full, not based on calories. When you add fried food and a lot of high-calorie seasonings to the salad, the effect is not so ideal. It is also high in nutrients, which can include your vegetables all day.
Even if you do add additives that are not vegetables or (if you add) higher calorie seasonings, you can keep this state. One won't deny the other. Salad can be said to be a loose term, which only means food that can be separated but contained in the same bowl, while soup is a soup that combines food more. This is a way to get a lot of food you need/want in a day without eating them alone.